Fill up the GMC Sierra 1500 SLT Flex-fuel with E85, gasoline or any combination thereof. With an EPA-estimated city/highway fuel economy of 16/20 miles per gasoline gallon, 315 horsepower and 338 ft-lbs of torque under the burly hood, take a gander through this photo gallery to get a good look at this hard-workin' guy. Click the thumbnails for more info, and for details and driving impressions check out our GMC Sierra 1500 SLT flex-fuel test drive and review.
 Down the hatch with E85 |  GMC Sierra flex-fuel badge |  2007 Sierra right rear |  Bike hike anyone? |
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